A SIMPLE AIR SAMPLING TECHNIQUE FOR MONITORING NITROUS OXIDE POLLUTION
نویسندگان
چکیده
منابع مشابه
Comparison of sampling techniques for studies of nitrous oxide pollution.
The retention of nitrous oxide in samples of nitrous oxide in air held in disposable plastic syringes, glass syringes and custom-made nylon film bags was studied by means of gas chromatography at intervals of 90 min, 24, 48 and 120 h after filling the containers. After 24 h the nylon bags retained a mean concentration of 94.5% of the original concentration of nitrous oxide. The disposable plast...
متن کاملNitrous oxide and hypnosis; a combined technique.
Introduction: Making dental treatment more pleasant through the use of nitrous oxide sedation has met with varying degrees of success in the hands of different practitioners. Some ofus see it routinely for a large percentage of our practice and find it indispensible, while others purchase the equipment, take courses in its use, administer it enthusiastically for a short while and finding the re...
متن کاملSensor Grids For Air Pollution Monitoring
In this paper we describe the use of sensor grids within Discovery Net to construct a distributed system for urban air pollution monitoring and control. We present the background to urban air pollution monitoring and describe the high throughput sensors developed within this project to address the problem. We differentiate between the concepts of sensor networks and sensor grids and discuss the...
متن کاملGas Sensors for Monitoring Air Pollution
The air pollution caused by exhaust gases from automobiles has become a critical issue. In some regions, fossil fuel combustion is a problem as well. The principal gases that cause air pollution from automobiles are nitrogen oxides, NOx (NO and NO2), and carbon monoxide (CO). Because NOx gases with sulfur oxides (SOx) emitted from coal fired plants cause acid rain and global warming and produce...
متن کاملNitrous oxide for monitoring fluid absorption in volunteers.
BACKGROUND We studied whether nitrous oxide (N(2)O) added to a fluid allows the infused volume to be quantified by measuring N(2)O in the expired air during normal breathing. If so, N(2)O might serve as a tracer of fluid absorption during endoscopic surgery. METHODS Twelve male volunteers received continuous and intermittent i.v. infusions (5-45 min) of fluid containing 40 ml litre(-1) of N(2...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: British Journal of Anaesthesia
سال: 1981
ISSN: 0007-0912
DOI: 10.1093/bja/53.9.997